2.Wisconsin Journal of Education by Wisconsin Teachers' Association, Wisconsin Education Association Council, Wisconsin Dept. of Public Instruction (1882)"If not growing, he is fossilizing. If fossilizing, he has lost his usefulness as
a teacher. Mind is sharpened and brightened by friction with mind. ..."

3.Elementary Crystallography: Being Part One of General Mineralogy by William Shirley Bayley (1910)"The original organism may have been replaced, molecule by molecule, with the
fossilizing substance, or it may have been dissolved from the rock in which it ..."

4.Annual Report of the American Institute of the City of New York (1861)"The fourth process is by partially fossilizing the wood—filling the pores with
some inorganic matter, and leaving it in a mineral state in the pores of the ..."

5.Ohio Educational Monthly by Ohio Education Association (1882)"If not growing, he is fossilizing. If fossilizing, he has lost his usefulness as
a teacher. Mind is sharpened and brightened by friction with mind. ..."

6.A Sketch of the Geology of Fife and the Lothians, Including Detailed by Charles Maclaren (1839)"In the coal formation, the fossilizing substance was generally siliceous.
The perfect preservation of the organic structure, shows that the process had been ..."

7.The Ohio Educational Monthly and the National Teacher: A Journal of Education by Ohio State Teachers Association (1882)"If not growing, he is fossilizing. If fossilizing, he has lost his usefulness as
a teacher. Mind is sharpened and brightened by friction with mind. ..."